APA (7th ed.) Citation

Facts on File, Inc, Berkin, C., Paddock, L. O., & Rollyson, C. E. (2002). Encyclopedia of American literature. Facts on File.

Chicago Style (17th ed.) Citation

Facts on File, Inc, Carol Berkin, Lisa Olson Paddock, and Carl E. Rollyson. Encyclopedia of American Literature. New York: Facts on File, 2002.

MLA (9th ed.) Citation

Facts on File, Inc, et al. Encyclopedia of American Literature. Facts on File, 2002.